Merge tag 'x86_urgent_for_v5.13_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 fixes from Borislav Petkov:
 "A bunch of things accumulated for x86 in the last two weeks:

   - Fix guest vtime accounting so that ticks happening while the guest
     is running can also be accounted to it. Along with a consolidation
     to the guest-specific context tracking helpers.

   - Provide for the host NMI handler running after a VMX VMEXIT to be
     able to run on the kernel stack correctly.

   - Initialize MSR_TSC_AUX when RDPID is supported and not RDTSCP (virt
     relevant - real hw supports both)

   - A code generation improvement to TASK_SIZE_MAX through the use of
     alternatives

   - The usual misc and related cleanups and improvements"

* tag 'x86_urgent_for_v5.13_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  KVM: x86: Consolidate guest enter/exit logic to common helpers
  context_tracking: KVM: Move guest enter/exit wrappers to KVM's domain
  context_tracking: Consolidate guest enter/exit wrappers
  sched/vtime: Move guest enter/exit vtime accounting to vtime.h
  sched/vtime: Move vtime accounting external declarations above inlines
  KVM: x86: Defer vtime accounting 'til after IRQ handling
  context_tracking: Move guest exit vtime accounting to separate helpers
  context_tracking: Move guest exit context tracking to separate helpers
  KVM/VMX: Invoke NMI non-IST entry instead of IST entry
  x86/cpu: Remove write_tsc() and write_rdtscp_aux() wrappers
  x86/cpu: Initialize MSR_TSC_AUX if RDTSCP *or* RDPID is supported
  x86/resctrl: Fix init const confusion
  x86: Delete UD0, UD1 traces
  x86/smpboot: Remove duplicate includes
  x86/cpu: Use alternative to generate the TASK_SIZE_MAX constant

4 files changed, 13 insertions, 6 deletions

diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
index 6bdb69a9a7dc..a1b756c49a93 100644
--- a/arch/x86/kernel/cpu/common.c
+++ b/arch/x86/kernel/cpu/common.c
@@ -1851,8 +1851,8 @@ static inline void setup_getcpu(int cpu)
 	unsigned long cpudata = vdso_encode_cpunode(cpu, early_cpu_to_node(cpu));
 	struct desc_struct d = { };
 
-	if (boot_cpu_has(X86_FEATURE_RDTSCP))
-		write_rdtscp_aux(cpudata);
+	if (boot_cpu_has(X86_FEATURE_RDTSCP) || boot_cpu_has(X86_FEATURE_RDPID))
+		wrmsr(MSR_TSC_AUX, cpudata, 0);
 
 	/* Store CPU and node number in limit. */
 	d.limit0 = cpudata;
diff --git a/arch/x86/kernel/cpu/resctrl/monitor.c b/arch/x86/kernel/cpu/resctrl/monitor.c
index dbeaa8409313..f07c10b87a87 100644
--- a/arch/x86/kernel/cpu/resctrl/monitor.c
+++ b/arch/x86/kernel/cpu/resctrl/monitor.c
@@ -84,7 +84,7 @@ unsigned int resctrl_cqm_threshold;
 static const struct mbm_correction_factor_table {
 	u32 rmidthreshold;
 	u64 cf;
-} mbm_cf_table[] __initdata = {
+} mbm_cf_table[] __initconst = {
 	{7,	CF(1.000000)},
 	{15,	CF(1.000000)},
 	{15,	CF(0.969650)},
diff --git a/arch/x86/kernel/nmi.c b/arch/x86/kernel/nmi.c
index bf250a339655..2ef961cf4cfc 100644
--- a/arch/x86/kernel/nmi.c
+++ b/arch/x86/kernel/nmi.c
@@ -524,6 +524,16 @@ nmi_restart:
 		mds_user_clear_cpu_buffers();
 }
 
+#if defined(CONFIG_X86_64) && IS_ENABLED(CONFIG_KVM_INTEL)
+DEFINE_IDTENTRY_RAW(exc_nmi_noist)
+{
+	exc_nmi(regs);
+}
+#endif
+#if IS_MODULE(CONFIG_KVM_INTEL)
+EXPORT_SYMBOL_GPL(asm_exc_nmi_noist);
+#endif
+
 void stop_nmi(void)
 {
 	ignore_nmis++;
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index 7ffb0cf3f997..0ad5214f598a 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -1865,9 +1865,6 @@ static bool slv_set_max_freq_ratio(u64 *base_freq, u64 *turbo_freq)
 	return true;
 }
 
-#include <asm/cpu_device_id.h>
-#include <asm/intel-family.h>
-
 #define X86_MATCH(model)					\
 	X86_MATCH_VENDOR_FAM_MODEL_FEATURE(INTEL, 6,		\
 		INTEL_FAM6_##model, X86_FEATURE_APERFMPERF, NULL)